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<br />SOUTH PLATIE RIVER BASIN <br />as of June 1,2004 <br /> <br />Mountain Snow pack. (Inches) <br /> <br />-*-Currenl -.-Average <br />__Maximum --+-Minimum <br /> <br />30 <br /> <br /> <br /> 140- <br /> 120 <br />~ 100 <br />0> <br />. <br />" <br />~ <br />> 80. <br />" <br />- , <br />0 , <br />- 1- <br />0 80 <br />~ , <br />e <br />~ <br />"- 40 <br /> 20 <br /> 0, <br /> Oct Nov Dee Jan Feb Ma, Apr May <br /> <br /> 25 <br />0 20 <br />- <br />0 <br />~ <br />.. <br />> 15 <br />'5 <br />CT <br />w <br />" <br />~ <br />.. 10 <br />;: <br /> 5 <br /> <br />o <br />Jan Feb Mar Apr May Jun <br /> <br />.llased on selected stations <br /> <br />Precipitation. (%1 of average) <br /> <br />I_Monthly DYear-lo.date I <br /> <br /> <br /> <br /> <br />Very rapid melting during May has nearly depleted most of the measurable snowpack in the South <br />Platte Basin, The snowpack measurements have decreased from 65% of average on May I, to <br />only 13% of average on June L There is only 21% of the amount of snow in the basin there was <br />last year at this same time, Measurements range from no measurable snow in the Upper South <br />Platte Watershed, to 30% of average in the Boulder Creek Watershed, Demonstrating how <br />extremely Colorado's climate can shift over a short period of time, May's monthly precipitation <br />was only 38% of average, which was the second lowest monthly amount this water year, and quite <br />a contrast to the 139% of average monthly amount during April. Despite rapid snow melt, <br />reservoir storage is only 77% of average, The amount is 9% above last year's volumes on this <br />date, Streamflow forecasts range from only about 35% of average along Ihc upper reaches of the <br />South Platte River to nearly 70% of average along the tributary streams of the northern Front <br />Range, <br />